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Finding the Fourth Proportional to 55,098,985.20, 82,648,477.80 and 16,760,437.80

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Solution

The fourth proportional to 55,098,985.20, 82,648,477.80 and 16,760,437.80 is: 25,140,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,098,985.20 : 82,648,477.80 = 16,760,437.80 : x
  2. Step 2: Convert to fraction form
    55,098,985.20/82,648,477.80 = 16,760,437.80/x
  3. Step 3: Cross multiply
    55,098,985.20x = 82,648,477.80 × 16,760,437.80
  4. Step 4: Simplify right side
    55,098,985.20x = 1,385,224,671,431,580.75
  5. Step 5: Solve for x
    x = 1,385,224,671,431,580.75/55,098,985.20
  6. Step 6: Final answer
    x = 25,140,656.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.